Continuity of Gross Proved Reserves1

  North
America2
North
Sea
Southeast
Asia
Algeria Sudan Trinidad Total
Crude Oil and Liquids (mmbbls)  
Total Proved  
Proved reserves at December 31, 2001 212.3  274.5  59.3  35.2  156.3  737.6 
Discoveries, additions and extensions 13.0  13.5  9.6  2.6  32.3  19.2  90.2 
Purchase of reserves 1.4  7.5  8.9 
Sale of reserves (4.6) (2.8) (7.4)
Net revisions and transfers (1.2) 3.5 (10.4) (5.8) (13.9)
2002 Production (21.8) (46.5) (8.3) (21.9) (98.5)
Proved reserves at December 31, 2002 199.1  249.7  60.6  27.4  160.9  19.2  716.9 
Discoveries, additions and extensions 16.0  8.2  25.2  3.9  53.3 
Purchase of reserves 1.3  21.1  22.4 
Sale of reserves (5.3) (156.1) (161.4)
Net revisions and transfers (0.1) 18.7  7.6  0.1  26.3 
2003 Production (20.8) (41.3) (9.0) (2.4) (4.8) (78.3)
Proved reserves at December 31, 2003 190.2  256.4  84.4  29.0  19.2  579.2 
Discoveries, additions and extensions 17.3  29.8  13.0  13.9  74.0 
Purchase of reserves 0.2  34.1  1.3  35.6 
Sale of reserves (2.6) (3.3) (5.9)
Net revisions and transfers (2.2) 24.6  3.4  (0.7) (7.8) 17.3 
2004 Production (19.9) (44.6) (13.0) (5.0) (82.5)
Proved reserves at December 31, 2004 183.0  297.0  89.1  37.2  11.4  617.7 
Proved Developed  
December 31, 2001 203.3  215.7  20.4  120.4  559.5 
December 31, 2002 190.0  212.6  19.7  4.8  143.4  570.5 
December 31, 2003 186.4  213.0  29.5  25.5  454.4 
December 31, 2004 171.0  254.0  39.9  27.9  11.0  503.8 
Natural Gas (bcf)  
Total Proved  
Proved reserves at December 31, 2001 2,596.8  302.2  1,597.5  4,496.5 
Discoveries, additions and extensions 374.2  15.4  19.7  223.5  632.8 
Purchase of reserves 37.7  0.4  38.1 
Sale of reserves (34.9) (34.9)
Net revisions and transfers (80.3) (11.3) (54.4) (146.0)
2002 Production (300.1) (44.6) (34.5) (379.2)
Proved reserves at December 31, 2002 2,593.4  262.1  1,528.3  223.5  4,607.3 
Discoveries, additions and extensions 351.5  1.0  107.0  459.5 
Purchase of reserves 107.1  14.4  121.5 
Sale of reserves (14.3) (14.3)
Net revisions and transfers (77.0) 17.5 (20.6) (80.1)
2003 Production (315.8) (39.9) (42.7) (398.4)
Proved reserves at December 31, 2003 2,644.9  255.1  1,572.0  223.5  4,695.5 
Discoveries, additions and extensions 478.5  8.0  765.3  1,251.8 
Purchase of reserves 22.8  0.1  22.9 
Sale of reserves (72.7) (0.5) (73.2)
Net revisions and transfers (113.2) (33.2) (58.7) (7.0) (212.1)
2004 Production (324.9) (41.6) (95.2) (461.7)
Proved reserves at December 31, 2004 2,635.4  187.9  2183.4  216.5  5223.2 
Proved Developed  
December 31, 2001 2,281.8  247.4  358.5  2,887.7 
December 31, 2002 2,278.7  232.8  723.8  3,235.3 
December 31, 2003 2,404.0  220.1  920.9  3,545.0 
December 31, 2004 2,207.3  160.6  858.2  3,226.1 

  1. See oil and gas advisory on page 24.
  2. North American gross proved reserves exclude synthetic crude oil reserves: 2002 — 43.2 mmbbls; 2003 — 42.3 mmbbls; 2004 — 41.2 mmbbls.
For Continuity of net proved reserves, see page 57.